MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
The most complete online medical dictionary: 16,436 terms covering anatomy, physiology, pathologies, diagnostic exams, pharmacology and every clinical specialty.
Designed for 3 kinds of users:
- Patients and family who want to understand a diagnosis, a medical report or instructions from a doctor.
- Students of medicine, nursing, physiotherapy and the health professions, dealing with technical terminology.
- Doctors, pharmacists and healthcare workers who need a quick and reliable reference.
Definitions are written in clear, accessible language while keeping the rigor required for professional use. Each term has a dedicated URL, instant autocomplete search, and can be shared on WhatsApp, Facebook, X and via email with one click.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
Disclaimer: the content is for informational and educational purposes only and does not replace medical advice. If you have doubts about your health, always consult a qualified professional. In case of emergency call your local emergency number (911 in the US, 112 in the EU).
Molecule
The smallest unit of a substance that can exist alone and retain the character of that substance.
Read the definitionRandom terms
Show more- Blue baby operation A surgical procedure for a baby who is cyanotic (blue) due to a heart malformation that prevents blood from…
- Huntington disease Huntington disease: An hereditary disorder with mental and physical deterioration leading to death. Although…
- Beta cell A type of cell in the pancreas. Within the pancreas, the beta cells are located in areas called the islets of…
- Functional scoliosis A structurally normal spine that appears to have a lateral curve (scoliosis). Nonstructural scoliosis…
- Osteotomy Taking out part or all of a bone, or cutting into or through bone.
- Tick-borne disease >Babesiosis (a malaria-like infection) >Colorado tick fever (generally in the western US) >Ehrlichiosis >Lyme…
- Amino acids The building blocks of polypeptides and proteins
- Hirsutism Having an overabundance of hair. A person with hirsutism is said to be hirsute (pronounced hir-suit)…
- Pineal region tumor A brain tumor on or near the pineal gland. There are at least 17 types of pineal gland tumors, most of which…
- Drug, antimicrobial A drug used to treat a microbial infection. The term 'antimicrobial' is a general one that refers to a group…
- Anorectic 1. Pertaining to anorexia, lack of appetite.2. A drug or other agent that causes anorexia and so diminishes…
- Neck, chronic stiff Also called torticollis or spasmodic torticollis, this is the most common of the focal dystonias: a state of…